Salary: £65,000 - 65,000 per year Requirements: We are looking for experience in a cybersecurity or IT security role. We need strong knowledge of security tools, including SIEM (Sentinel), EDR/XDR, firewalls, and IDS. We are looking for experience working in a SOC, NOC, or similar environment. We need a good understanding of security frameworks such as ISO 27001, NIST, and GDPR. We are looking for the ability to investigate threats and respond to incidents effectively. Security certifications such as Security, CEH, CISM, or CISA would be an advantage. Scripting or automation experience, such as PowerShell, would be a bonus. Applicants must be eligible for Security Clearance. Responsibilities: We will monitor and analyse security events across SIEM, endpoints, and networks. We will investigate incidents, perform root cause analysis, and carry out remediation. We will identify vulnerabilities and drive proactive security improvements. We will act as the go-to escalation point for security issues. We will support compliance with security standards and best practice. We will work closely with IT and wider teams to embed security across systems. We will take a hands-on role in threat detection, incident response, and continuous security improvement across the business. Technologies: Support PowerShell Security More: We are a well-established, technology-led organisation investing in our cyber capability and looking for a Senior IT Security Engineer to help protect our systems, infrastructure, and data. This is a hands-on, visible role based in Southend on Sea with a hybrid working pattern of three days onsite. We offer a salary of up to £65,000 plus benefits, including flexitime, an early Friday finish, 24 days holiday plus bank holidays, a pension, life assurance, sick pay, free parking, and onsite café and gym access. We are looking for someone who wants to influence strategy, make a real impact, and take ownership of security within a supportive business environment. last updated 22 week of 2026